Johnson signed with the Dolphins in August 2011 but was cut before the regular season started. Since then, he's moved to Miami and gotten in trouble with the law a few times, including choking out a girlfriend of his.

According to TMZ, Johnson has been spotted a few times at the strip club as a DJ, although he's not the main DJ.

Multiple TMZ strip club sources... yeah, we got those (a lot of those)... tell us Johnson has been spotted manning the DJ booth at Tootsie's Cabaret in Miami several times this year.

We're told Johnson isn't the main DJ -- but every now and then, he'll take over the booth for a quick guest set... and the crowd loves it.